x/distribution: In-Process Testing & CLI Refactor

[alexanderbez]

Description

ref: #6423
ref: #6571

---

Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[codecov]

Codecov Report

Merging #6652 into master will increase coverage by 0.79%.
The diff coverage is 46.80%.

@@            Coverage Diff             @@
##           master    #6652      +/-   ##
==========================================
+ Coverage   57.67%   58.47%   +0.79%     
==========================================
  Files         502      502              
  Lines       30040    30088      +48     
==========================================
+ Hits        17327    17594     +267     
+ Misses      11463    11205     -258     
- Partials     1250     1289      +39     

[amaury1093]

@alexanderbez Are you planning to touch on

cosmos-sdk/x/distribution/client/cli/tx.go

Line 235 in 8670a10

func GetCmdSubmitProposal(clientCtx client.Context) *cobra.Command {

in this PR?

Don't want to step on your toes wrt #6664

[alexanderbez]

@alexanderbez Are you planning to touch on

cosmos-sdk/x/distribution/client/cli/tx.go

Line 235 in 8670a10

func GetCmdSubmitProposal(clientCtx client.Context) *cobra.Command {

in this PR?
Don't want to step on your toes wrt #6664

@amaurymartiny yes, absolutely. Thanks for checking. All commands will have arguments removed in favor of getting everything they need from the command's context and flags. I should be done this PR in a few hours, so you should be able to resume your work shortly. In fact, I've just finished the query commands. I'm moving onto tx commands.

[alexanderbez]

@amaurymartiny I've updated the files if you need a reference for your PR.